Secondary teachers have voted for industrial action in the event that the Government pushes through pay cuts.
A total of 87% of the membership of the Association of Secondary Teachers in Ireland voted in favour of industrial action.
However, the union has agreed to enter LRC talks on reviving the Croke Park 2 deal.
The ASTI says the ballot reflects the "deep sense of unfairness felt by teachers" who have already taken "significant pay cuts averaging 14%".